Closure for oiling-ducts.



J. L. OSGOOD.

CLOSURE FOR OILING DUCTS.

APPLICATlON FILED MAR. 3. \914.

Patented 001;. 19, 1915.

Min/e SJ e.s;-

SATES CLOSURE FOR OILING-DUCTS.

Specification of Letters Patent.

Patented. Oct. 19, 1915.

Application filed March 3, 1914. Serial No. 822,243.

To all whom it may concern:

Be it known that I, JOHN L. Oscooo, a citizen of the United States, residing at Buffalo, in the county of Erie and State of New York, have invented a new and useful Improvement in Closures for Oiling-Ducts, of which the following is a specification.

This invention relates to that type of valved covers or closures for oiling ducts which comprise a shell or casing, usually of small size, that is secured in the outer end of the oil hole and contains a spring-seated valve which normally closes an oil inlet orifice in the outer end of the shell and is adapted to be pushed inwardly to open the orifice by the spout of the oil can when 1ntroducing the oil.

The object of the invention is to produce a valved cover for oil ducts which is of an exceedingly simple and inexpensive construction, adapted to be made in small sizes, which affords an efiicient closure for the oil hole, but in which the valve and its spring will not obstruct the free passage of the oil into the duct when the valve is shoved inwardly ofi of its seat.

In the accompanying drawings: Figure 1 is a sectional elevation showing an oil hole closure embodying the invention in place in an oil duct. Fig. 2 is an enlarged sectional elevation of the closure removed. Fig. 3 is an enlarged sectional elevation showing the parts of the closure before they are assembled. Fig. 4 is an enlarged sectional plan of the closure. Fig. 5 is an enlarged sectional elevation thereof showing the valve unseated.

A represents the shell or casing of the closure which is seated in an enlarged or counterbored outer end portion of an oil duct, indicated at a, and has an outer or upper end provided with an inlet orifice a for the introduction of the oil and an open inner or lower end. The inlet orifice a is normally closed by a valve B, preferably consisting of a small steel ball, which is movably confined in the shell and is held against a conical seat 6 surrounding the inlet orifice a by a coil spring C which bears at its inner end against an internal flange or part D at the inner end of the shell. This flange is preferably formed by spinning inwardly the integral end portion ofthe shell.

The walls of the shell are provided with one or more, preferably two, longitudinal slots E. These slots preferably extend from near the outer end of the shell to the extreme inner end thereof, intersecting the spring bearing flange D and being open at from the shell into the oil duct a, and the oil can escape from the shell both through its open inner end and through the slots 'E, or through the slots alone shouldthe open end of the shell be obstructed. If, therefore, in the use of the device the valve should be shoved inwardly far enough to completely collapse the spring and cause the opening at the inner end of the shell to be obstructed by the ball and the collapsed spring, as indicated in Fig. 5, the escape of the oil will not he cut off, since the oil can flow down around the ball and spring and out through the slots E'which extend above the spring and the middle of the ball when the ball is in its lowest position. It is therefore impossible to obstruct the discharge of the oil from the shell by shoving the ball inwardly too far, even in the smallest sizes of closures, and this construction permits the use of solid ball valves, which are more satisfactory and less expensive to make than valves of special construction. The slots E also enable the walls of the. shell to spring slightly and retain the closure securely in place by their pressure against the walls of the cavity in which the'closure is seated.

By the described construction apractical and efiicient closure is produced which is composed of only three parts, the shell, the ball and the ring, which are of the simplest conceiva 1e construction and can be manufa'cturedat the minimum expense. The shell can be made from solid cylindrical stock simply by boring the cavity with an ordinary drill, the conical point of which at the same tinn'forms the beveled or conical seat I) for the ball. valve.

I claim as my invention.

1. In a closure for oil ducts, the combi nation of a single-piece integral shell which is adapted to be located in a retaining cavity and has an open inner end and an .oil inlet orifice in its outer end, and a spring-seated valve in said shell for closing said inlet orifice, said shell having laterally yielding side walls at its inner end which contract when the shell is forced into said cavity and which I grip the Walls of the cavity to frictionally hold said shell in said cavity.

2. In a closure for oil ducts, the combination of a shell which is adapted to be located in a retaining cavity and has an open inner end and an oil inlet orifice in its outer end, and a spring-seated valve in said shell for closing said inlet orifice, the inner end of said shell being bifurcated, whereby the bifurcated portions of the shell are pressed toward each other when the shell is forced into said cavity, and frictionally grip the side walls of the cavity.

3. In a closure for oil ducts, the combination of a shell which is adapted to be located in a retaining cavity and has an open inner end and an oil inlet orifice in its outer end. and a spring-seated valve in said shell for closing said inlet orifice, said shell having a slot in its side wall extending to the inner end f the shell through which the oil can discharge from the shell and which permits the inner end of the shell to be contracted when placed into said cavity and to yieldingly grip the Walls of the cavity to hold the shell in place therein.

4. In a closure for oil ducts, the combination. of a single-piece integral shell having at one end an inlet orifice surrounded by a valve seat and at the other end a discharge opening surrounded by an inturned flange forming a bearing for a spring, a ball valve in the shell adapted to engage said seat for closing the inlet orifice, and a spring for yieldingly seating said valve, said spring bearing at one end against said ball valve and at its other end on said inturned flange, said shell having a longitudinal slot in its side wall open at said other end of the shell through which the oil can discharge from said'shell.

Vitness my hand, this 28th day of Feb ruary, 1914.

JOHN L. OSGOOD.

Witnesses:

C. \V. PARKER, A. L. MCGEE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patent! Washington, D. 0.? 

